Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Heat-conducting ceramic-based composite material with profiling structure and preparation method of heat-conducting ceramic-based composite material
The invention relates to a heat-conducting ceramic-based composite material with a profiling structure and a preparation method of the heat-conducting ceramic-based composite material. The method comprises the following steps: weaving polyacrylonitrile-based carbon fibers into one-way carbon fiber cloth used in the circumferential direction, and mixing and weaving the polyacrylonitrile-based carbon fibers and mesophase pitch-based carbon fibers into one-way carbon fiber cloth used in the height direction; one-way carbon fiber cloth in two directions is alternately laid on the surface of the tool, and polyacrylonitrile-based carbon fiber and mesophase pitch-based carbon fiber mixed fiber bundles are adopted for treatment in the wall thickness direction; preparing a carbon interface layer through chemical vapor deposition, and graphitizing to obtain a carbon fiber intermediate blank; and enabling the ceramic precursor solution to react with the carbon fiber intermediate green body by adopting a precursor impregnation and pyrolysis process, so as to prepare the heat-conducting ceramic-based composite material with the profiling structure. The heat conduction ceramic matrix composite material with the profiling structure can be prepared through near-net-size forming, and the prepared material is low in density, high in specific strength and uniform and compact in internal organization structure and particularly has the heat conduction advantage in the wall thickness direction.
本发明涉及一种仿形结构热疏导陶瓷基复合材料及其制备方法。所述方法：将聚丙烯腈基碳纤维编织成用于圆周方向的单向碳纤维布，将聚丙烯腈基碳纤维与中间相沥青基碳纤维混合编织成用于高度方向的单向碳纤维布；将两个方向单向碳纤维布在工装表面交替铺层，在壁厚方向采用聚丙烯腈基碳纤维与中间相沥青基碳纤维混合纤维束进行处理；通过化学气相沉积制备碳界面层并石墨化处理，得到碳纤维中间坯体；采用前驱体浸渍裂解工艺，使陶瓷前驱体溶液与碳纤维中间坯体反应，制得仿形结构热疏导陶瓷基复合材料。本发明可以近净尺寸成型制备仿形结构的热疏导陶瓷基复合材料，制得的材料密度低、比强度高、内组织结构均匀致密、尤其在壁厚方向上具有导热优势。
Heat-conducting ceramic-based composite material with profiling structure and preparation method of heat-conducting ceramic-based composite material
The invention relates to a heat-conducting ceramic-based composite material with a profiling structure and a preparation method of the heat-conducting ceramic-based composite material. The method comprises the following steps: weaving polyacrylonitrile-based carbon fibers into one-way carbon fiber cloth used in the circumferential direction, and mixing and weaving the polyacrylonitrile-based carbon fibers and mesophase pitch-based carbon fibers into one-way carbon fiber cloth used in the height direction; one-way carbon fiber cloth in two directions is alternately laid on the surface of the tool, and polyacrylonitrile-based carbon fiber and mesophase pitch-based carbon fiber mixed fiber bundles are adopted for treatment in the wall thickness direction; preparing a carbon interface layer through chemical vapor deposition, and graphitizing to obtain a carbon fiber intermediate blank; and enabling the ceramic precursor solution to react with the carbon fiber intermediate green body by adopting a precursor impregnation and pyrolysis process, so as to prepare the heat-conducting ceramic-based composite material with the profiling structure. The heat conduction ceramic matrix composite material with the profiling structure can be prepared through near-net-size forming, and the prepared material is low in density, high in specific strength and uniform and compact in internal organization structure and particularly has the heat conduction advantage in the wall thickness direction.
本发明涉及一种仿形结构热疏导陶瓷基复合材料及其制备方法。所述方法：将聚丙烯腈基碳纤维编织成用于圆周方向的单向碳纤维布，将聚丙烯腈基碳纤维与中间相沥青基碳纤维混合编织成用于高度方向的单向碳纤维布；将两个方向单向碳纤维布在工装表面交替铺层，在壁厚方向采用聚丙烯腈基碳纤维与中间相沥青基碳纤维混合纤维束进行处理；通过化学气相沉积制备碳界面层并石墨化处理，得到碳纤维中间坯体；采用前驱体浸渍裂解工艺，使陶瓷前驱体溶液与碳纤维中间坯体反应，制得仿形结构热疏导陶瓷基复合材料。本发明可以近净尺寸成型制备仿形结构的热疏导陶瓷基复合材料，制得的材料密度低、比强度高、内组织结构均匀致密、尤其在壁厚方向上具有导热优势。
Heat-conducting ceramic-based composite material with profiling structure and preparation method of heat-conducting ceramic-based composite material
一种仿形结构热疏导陶瓷基复合材料及其制备方法
ZHANG BAOPENG (Autor:in) / HAO NAIRONG (Autor:in) / ZUO HONGJUN (Autor:in) / LIU WEI (Autor:in) / SUN TONGCHEN (Autor:in) / PEI YUCHEN (Autor:in)
22.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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